Show spread of corn borer in 1930 decreased the spend spead of tile european Kuro peau corn borer in 1930 was much less than the average for the past five years most of the spread which took place was south ot of the older infested area the spread west has not yet beached leached the east boundary of illinois according to the university of illinois marked reduction in numbers of borers in the more heavily infested areas aud and restricted spread because of adverse weather conditions were the principal developments in the corn borer situation during 1910 |